RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 7 of Exercise 4.7

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7

Write each of the following in the simplest form:

Put x = tanθ


θ = tan–1(x)


tan–1{tanθ +}


= tan–1{tanθ +}


= tan–1{tanθ +secθ }


= tan–1


= tan–1


Sinθ = ,cosθ =


= tan–1


= tan–1


= tan–1


Dividing by we get,


= tan–1


= tan–1


= tan–1


tan(x+y) =


= tan–1


=


From 1 we get


= .


Therefore, the simplification of given equation is .


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